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https://github.com/golang/go
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2f54081adf
If TestMain reports a wrong exit code to os.Exit, the test will be exited with exist code inconsist with test results. This CL eliminates the requirement of calling os.Exit in TestMain. Now, m.Run records the execution status of its test, the outer main func will call os.Exit with that exit code if TestMain does not call os.Exit. If TestMain does not call m.Run, the outer main func remain calls os.Exit(0) as before. Fixes #34129 Change-Id: I9598023e03b0a6260f0217f34df41c231c7d6489 Reviewed-on: https://go-review.googlesource.com/c/go/+/219639 Reviewed-by: Ian Lance Taylor <iant@golang.org>
145 lines
3.9 KiB
HTML
145 lines
3.9 KiB
HTML
<!--{
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"Title": "Go 1.15 Release Notes",
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"Path": "/doc/go1.15"
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}-->
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<!--
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NOTE: In this document and others in this directory, the convention is to
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set fixed-width phrases with non-fixed-width spaces, as in
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<code>hello</code> <code>world</code>.
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Do not send CLs removing the interior tags from such phrases.
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-->
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<style>
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main ul li { margin: 0.5em 0; }
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</style>
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<h2 id="introduction">DRAFT RELEASE NOTES — Introduction to Go 1.15</h2>
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<p>
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<strong>
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Go 1.15 is not yet released. These are work-in-progress
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release notes. Go 1.15 is expected to be released in August 2020.
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</strong>
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</p>
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<h2 id="language">Changes to the language</h2>
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<p>
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TODO
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</p>
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<h2 id="ports">Ports</h2>
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<p>
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TODO
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</p>
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<h2 id="tools">Tools</h2>
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<p>
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TODO
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</p>
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<h3 id="go-command">Go command</h3>
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<p>
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TODO
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</p>
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<h4 id="go-test"><code>go</code> <code>test</code></h4>
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<p><!-- https://golang.org/issue/36134 -->
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Changing the <code>-timeout</code> flag now invalidates cached test results. A
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cached result for a test run with a long timeout will no longer count as
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passing when <code>go</code> <code>test</code> is re-invoked with a short one.
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</p>
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<h4 id="go-flag-parsing">Flag parsing</h4>
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<p><!-- https://golang.org/cl/211358 -->
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Various flag parsing issues in <code>go</code> <code>test</code> and
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<code>go</code> <code>vet</code> have been fixed. Notably, flags specified
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in <code>GOFLAGS</code> are handled more consistently, and
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the <code>-outputdir</code> flag now interprets relative paths relative to the
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working directory of the <code>go</code> command (rather than the working
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directory of each individual test).
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</p>
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<h2 id="runtime">Runtime</h2>
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<p>
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TODO
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</p>
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<h2 id="library">Core library</h2>
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<p>
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TODO
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</p>
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<dl id="testing"><dt><a href="/pkg/testing/">testing</a></dt>
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<dd>
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<p><!-- golang.org/issue/28135 -->
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The <code>testing.T</code> type now has a <code>Deadline</code> method
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that reports the time at which the test binary will have exceeded its
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timeout.
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</p>
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<p><!-- golang.org/issue/34129 -->
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A <code>TestMain</code> function is no longer required to call
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<code>os.Exit</code>. If a <code>TestMain</code> function returns,
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the test binary will call <code>os.Exit</code> with the value returned
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by <code>m.Run</code>.
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</p>
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</dd>
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</dl><!-- testing -->
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<h3 id="minor_library_changes">Minor changes to the library</h3>
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<p>
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As always, there are various minor changes and updates to the library,
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made with the Go 1 <a href="/doc/go1compat">promise of compatibility</a>
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in mind.
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</p>
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<p>
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TODO
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</p>
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<dl id="pkg-runtime"><dt><a href="/pkg/runtime/">runtime</a></dt>
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<dd>
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<p><!-- CL 221779 -->
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If <code>panic</code> is invoked with a value whose type is derived from any
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of: <code>bool</code>, <code>complex64</code>, <code>complex128</code>, <code>float32</code>, <code>float64</code>,
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<code>int</code>, <code>int8</code>, <code>int16</code>, <code>int32</code>, <code>int64</code>, <code>string</code>,
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<code>uint</code>, <code>uint8</code>, <code>uint16</code>, <code>uint32</code>, <code>uint64</code>, <code>uintptr</code>,
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then the value will be printed, instead of just its address.
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</p>
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</dd>
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</dl>
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<dl id="sync"><dt><a href="/pkg/sync/">sync</a></dt>
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<dd>
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<p><!-- golang.org/issue/33762 -->
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The new method
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<a href="/pkg/sync#Map.LoadAndDelete"><code>Map.LoadAndDelete</code></a>
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atomically deletes a key and returns the previous value if present.
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</p>
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<p><!-- CL 205899 -->
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The method
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<a href="/pkg/sync#Map.Delete"><code>Map.Delete</code></a>
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is more efficient.
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</p>
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</dl><!-- sync -->
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<dl id="time"><dt><a href="/pkg/time/">time</a></dt>
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<dd>
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<p><!-- golang.org/issue/33184 -->
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The new method
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<a href="/pkg/time#Ticker.Reset"><code>Ticker.Reset</code></a>
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supports changing the duration of a ticker.
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</p>
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</dd>
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</dl><!-- time -->
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